Gas-chandelier lamp



(No Model.)

. W. S. HAMM & H. S. TEAL.

GAS GHANDELIER LAMP.

No. 547,395. Patented Oct. 1.1895- NllllH WILLIAM S. l-IAMM AND HARRY S.TEAL, OF CHICAGO, ILLINOIS.

GAS-CHANDELIER LAMP.

SPECIFICATION forming part of Letters Patent No. 547,395, dated October1, 1895. Application filed November 1, 1894; Serial No. 527,627; (Nomodel.)

in @132 whom it may concern/.-

Be it known that We, WILLIAM S. HAMM and HARRY S. TEAL, of Chicago, inthe county of Cook and State of Illinois, have invented certain new anduseful Improvements in Gas- Chandelier Lamps for Railway-Car Use, ofwhich the following is a specification.

This invention relates to that class of lamps which are supplied by gasgenerated or stored upon the train; and it consists more particularly inimprovements whereby the lamp is given greater efficiency by a properadmission of fresh air to the burner, thus insuring a more perfectcombustion and consequent freedom from smoke and smell; saidimprovements having also in-view greater simplicity of construction andbetter appearance than has been heretofore found in devices of thisdescription.

In the accompanying drawings, Figure l is a View of our invention, onehalf being shown in exterior elevation and the other half in verticalsection. Fig. 2 is an enlarged fragmentary sectional elevation on theline 2 2 of Fig. 1. Fig. 3 is an enlarged vertical section on the line 33 of Fig. 2.

Similar letters and figures of reference indicate similar parts in therespective figures.

A represents the roof or ceiling of the car.

B B show pendants by means of which the lamp is supported from the roof.

C C represents frames or ribs attached to the pendants at 1 2, thelatter being secured to the car roof at 3 4. While two pendants B B andtwo frames or ribs C C are indicated, we prefer that four of each shallbe employed, although the number is immaterial,

provided the requisite support to thelamp is D may represent the lamp asa whole, which by choice is of the Argand gas-burner type, and which issupported by the lower portions of the frames or ribs C C.

E is the glass chimney, F the shade, perfectly translucent, and G theshade-holder. The latter comprises two component parts, one being shownby 5, which is threaded and pro- ,vided with thumb and finger pieces 6,and

the other by 7, which is secured rigidly to the ribs or frames 0 C andis also threaded to receive the rotatable threaded part 5. The part 7 isfurnished with a flange 8, the shade portion 7 of the shade-holder.

F being held between the skirt 9 of the ro- 1 tatable part 5, the ring10 of the fixed threaded part 7, and the flange 8, as clearly shown inFig. 1. The upper portion of the glass chimney E is supported orsteadied by the slitted flange 11, forming a part of the stationary Oneof the pendants, as that B, is made tubular, as also is its connectingframe or rib, as that C, the

two forming a channel through which gas received at the pipe H passes tothe burner, a tube H leading from the source of gas-supply to the pipeH. The gas furnished. to the burner is regulated by means of the cook12. Air is admitted to the center of the flame through the perforations13 at the lower end of the exterior tube of the burner, the supply beingregulated by means of the cap 14, "which 'is provided with a screw 15,working in a nut 16, secured to the burner. Air is admitted to theexterior of the flame, as shown by the arrows below the section-line 22, and its inflow regulated through the medium of the rotary cap 17,having a series of holes 18, which register with the holes 19, formed ina part of the burner, as indicated in Fig. 1, and also in enlarged scalein Figs. 2 and 3.

The smoke-bell is shown by I, and, as will be seen, it will allow of theescape from the lamp of the products of combustion and of heated air andimpure gases from the upper region of the car. The smoke-bell l[comprises an inner shell 20 and an outer shell 21, the metallic chimneyconsisting of a central lower section 22 and an upper section 23,through which two sections the products of combustion, following thecourse of certain of the arrows, as will be understood, escape to theouter air under the hood 24. The smokebell is substantially a part ofthe construction described in Patent No. 364,154, granted May 31, 1887,to W. W. VVillits and A. M. Duburn. By causing the smoke-bell to consistof inner and outer separated shells and providing passages for theescape of the products of combustion, heated air, &c., as described, theentire smoke-bell is kept cool and all danger of setting fire to thewoodwork of the car by undue heat obviated. An outer cylinder 25surrounds the sections 22 and 23 of the chimney and receives the heatedair and ascending gases from the car through the tion,pass through theperforated cylinder 27 5 and escape under the hood 21. The upper section23 of the chimney is provided with a deflector 28, which guides anddiverts the direct products of combustion through the perforations ofthe cylinder 27into the hood 24:.

In operation, the gas to supply the burner passes, on opening the cock12, from the source of supply through the tube H. into the tube H andthrough it into the tubular pendant B and tubular rib or frame 0 to theburner, the necessary oxygen being supplied to the flame by means of theperforations 13 and screw-cap 14 and the annular regulator 17, whoseperforations 18 register with those 19 of a fixed portion of the burner.The products of combustion follow the course of certain of the arrows,as will be readily understood, through the glass chimney into the innershell 20 of the smoke-bell, passing through the perforations of thecylinder 27 into and under the hood 2i into the exterior atmosphere,while the heated air and vitiated gases from the car pass into the outershell 21 and perforated ring 30 into the outer cylinder 25, and alsointo said outer cylinder through the perforated ring or rim 26) throughthe perforated cylinder '27, as is made clear by the arrows indicatingtheir course, to mix and escape with the products of combustion from andunder the hood 2t.

By this construction a burner producing a powerful flame of intense heatmay be safely used without danger of igniting the woodwork of the car,the flame being properly supplied with the regulated quantities ofoxygen to feed the flame.

We claim as our invention In a chandelier gaslamp for railway cars, anArgand burner the lower end of whose exterior tube is extended below theinner tube and provided with perforations 13 for admitting air to thecenter of the flame, the upper end of said exterior tube being providedwith, an exterior part having holes 19 for admitting air into the spacebetween said outer tube and the chimney, a screw cap surrounding thelower end of said exterior tube, and a rotary cap having a series ofholes 18 which register with the holes 19, combined with a tube formingone of the supports of the burner, said tube being adapted to supply gasto a space in the burner between the interior and exterior tubes thereofand between the lower and upper air regulating devices, substantially asset forth.

In testimony whereof we, the said WILLIAM S. HAMM and HARRY S. TEAL,have hereto set our hands and seals.

WILLIAM S. HAMM. [1,. s] HARRY S. TEAL. [n s] Witnesses:

G. D. WALTERs, J. J FERRIE.

